CN109760656A - Hydraulic decoupling type electronic hydraulic brake system - Google Patents
Hydraulic decoupling type electronic hydraulic brake system Download PDFInfo
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- CN109760656A CN109760656A CN201811620833.2A CN201811620833A CN109760656A CN 109760656 A CN109760656 A CN 109760656A CN 201811620833 A CN201811620833 A CN 201811620833A CN 109760656 A CN109760656 A CN 109760656A
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Abstract
The invention discloses a kind of hydraulic decoupling type electronic hydraulic brake system, it include: pedal displacement sensor acquisition pedal assembly stroke, the first and second isolating valves are respectively equipped in the first chamber of master cylinder and the outlet of the second chamber, the first chamber of master cylinder exports parallel connection simulator and controls valve inlet, fluid reservoir connects the first chamber of master cylinder, second chamber, actively build pressure unit and pedal sense simulator, fluid reservoir and active, which are built between pressure unit, passes through pipeline, wherein a parallel pipeline is equipped with check valve, first hydraulic force snesor is located at the second chamber of master cylinder, second hydraulic force snesor, which is located at, actively builds the outlet of pressure unit, the setting of self-test valve is in the first chamber of master cylinder between fluid reservoir outlet, first and second inlet valves, which are arranged in parallel, is actively building the outlet of pressure unit, piping connection is between the first isolating valve and ESC module where first inlet valve, pipeline where second inlet valve It is connected between the second isolating valve and ESC module；ECU control self-test valve, first every with the second isolating valve, the first and second inlet valves, simulator control valve and actively build pressure unit.
Description
Technical field
The present invention relates to automotive fields, more particularly to a kind of automobile hydraulic decoupling type electronic hydraulic brake system.
Background technique
With the popularization of new-energy automobile and being constantly progressive for vehicle chassis technology, vehicle energy is recycled and advanced
The requirement of drive assistance function is constantly promoted.Traditional vacuum booster braking system is since non-decoupling formula mechanical structure is limited, tool
Have that volume is big, can not directly support energy regenerating, cannot achieve active brake, can not freely adjust the drawbacks such as assist rate.
Therefore since last decade, the electronic hydraulic brake system of above-mentioned vacuum booster disadvantage has been overcome gradually to be pushed to city
?.Wherein representative is Bosch IPB, the integrated type electricals brake fluid system such as continent MK C1.The spy of both products
Point be not only have the function of vacuum booster, while be integrated with ESC function and it is some other be suitable for it is advanced driving it is auxiliary
Help the active boost function of scene.But the mechanical structure of both products is excessively complicated, and can not freely arrange in pairs or groups ESC module, cost
About 2~3 times of traditional vacuum booster.
Summary of the invention
Replace vacuum booster using hydraulic system and mechanical structure the technical problem to be solved in the present invention is to provide a kind of,
And there is the hydraulic decoupling type electronic hydraulic brake system for the failure braking function for actively building pressure energy power and safety
The hydraulic decoupling refers to the flow direction of liquid in the open and close control master cylinder by solenoid valve, makes to brake major loop in master
Cylinder and active, which are built between pressure unit, to be switched, and the medium for transmitting brake pressure is entirely hydraulic.
In order to solve the above technical problems, hydraulic decoupling type electronic hydraulic brake system provided by the invention, comprising: pedal is total
At 1, ECU2, pedal displacement sensor 3, self-test valve 4, fluid reservoir 5, master cylinder 6, the first hydraulic force snesor 7, the first isolating valve 8,
Second isolating valve 9, simulator control valve 10, pedal sense simulator 11, the second hydraulic force snesor 12, the first inlet valve 13,
Pressure unit 16 is built in second inlet valve 14, check valve 15 and active；
Pedal displacement sensor 3 acquires 1 stroke of pedal assembly, and master cylinder 6 has the second chamber of the first chamber of master cylinder 6.1 and master cylinder
6.2, airtight connection between the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2, in the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2 point
Not She You plunger, the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2 outlet on be respectively equipped with the first isolating valve 8 and the second isolating valve
9, the first chamber of master cylinder 6.1 exports 11 simulator control valve of pedal sense simulator, 10 entrance in parallel, and simulator control valve 10 exports
Pedal sense simulator 11 is connected, pedal assembly 1 is connect with 6.1 plunger of the first chamber of master cylinder, and fluid reservoir 5 is separately connected master cylinder first
Pressure unit 16, pedal sense simulator 11 and the first chamber 6.1, the second chamber of master cylinder 6.2 are built in chamber 6.1, the second chamber of master cylinder 6.2 and active
It actively builds any road in pressure 16 3 pipeline of unit and shares 5 pipeline of fluid reservoir, fluid reservoir 5 and active, which are built between pressure unit 16, to be passed through
Parallel pipeline connection, wherein parallel pipeline is equipped with check valve 15 all the way, the first hydraulic force snesor 7 is arranged in the second chamber of master cylinder
6.2, the outlet of pressure unit 16 is actively being built in the second hydraulic setting of force snesor 12, and the setting of self-test valve 4 is in the first chamber of master cylinder 6.1 to storage
Between the outlet of flow container 5 on pipeline, the first inlet valve 13 and the second inlet valve 14 are arranged in parallel and are actively building pressure 16 outlet of unit
Road, 13 place piping connection of the first inlet valve is between the first isolating valve 8 and ESC module 21 on pipeline, 13 institute of the first inlet valve
In piping connection between the second isolating valve 9 and ESC module 21 on pipeline；
ECU2 acquires the first hydraulic force snesor 7, the second hydraulic force snesor 12 and 3 signal of pedal displacement sensor, with
Vehicle bus or sensor in other Internets or controller interact, to self-test valve 4, the first isolating valve 8, second every
From valve 9, simulator control valve 10, the first inlet valve 13, the second inlet valve 14 and actively build pressure unit 16 carry out control control patrol
Volume.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, pedal displacement sensor 3 uses binary channels
Sensor or single channel sensor.
It is further improved the hydraulic decoupling type electronic hydraulic brake system: 6.1 plunger of the first chamber of master cylinder and pedal are total
At 1 push rod axial direction elastic connection, and push rod can be rotated around connection center.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, 6.1 plunger of the first chamber of master cylinder and pedal are total
It is connected at 1 push rod elastic hinge joint.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, 6.2 plunger of the second chamber of master cylinder is in always
6 inner cavity of master cylinder.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, self-test valve 4, the first isolating valve 8 and second
Isolating valve 9 is normally opened 2/2-way solenoid valve, and pedal sense simulator 11, the first inlet valve 13 and the second inlet valve 14 are normally closed
2/2-way solenoid valve.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, check valve 15 controls brake fluid and is only capable of from storage
Flow container 5, which flows into, actively builds pressure unit 16.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, the second chamber of the first chamber of master cylinder 6.1 and master cylinder
6.2 connect for hydraulic pressure transfer, and use is coaxially arranged, and the initiating power during power-assisted is by the second chamber of the first chamber of master cylinder 6.1 and master cylinder
The pretightning force of 6.2 inner springs provides.
Be further improved the hydraulic decoupling type electronic hydraulic brake system has when self-test valve 4 is in power-up state
From the first chamber of master cylinder 6.1 to the one-way pressure maintaining ability of fluid reservoir 5.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, the first isolating valve 8 and the second isolating valve 9 tool
There is two-way pressure maintaining, the first isolating valve 8 and 9 arranged direction of the second isolating valve are, when the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2
When hydraulic hydraulic higher than in braking major loop, the spool of the first isolating valve 8 and the second isolating valve 9 tends to open, when electromagnetic force one
Periodically, above-mentioned pressure difference, which reaches isolating valve starting differential pressure, to open spool by starting differential pressure.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, simulator control valve 10 has two-way pressure maintaining
Ability, when hydraulic hydraulic higher than in the first chamber of master cylinder 6.1 in pedal sense simulator 11, the spool of simulator control valve 10 becomes
To unlatching, spool can be opened by starting differential pressure when above-mentioned pressure difference reaches 10 starting differential pressure of simulator control valve.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, the first inlet valve 13 and the second inlet valve 14
With two-way pressure maintaining ability, when actively building hydraulic hydraulic higher than in braking major loop in pressure unit 16,13 He of the first inlet valve
The spool of second inlet valve 14 tends to open, and can open valve by starting differential pressure when above-mentioned pressure difference reaches inlet valve starting differential pressure
Core.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, the hydraulic decoupling type electro-hydraulic brake
System has following operating mode；
A assistant mode；
B active boost mode；
C fluid infusion mode；
D Auto-Sensing Mode；
E failure backup mode.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, assistant mode working method is as follows；
ECU2 judges the braking intention of driver by stroke and time calculating speed, and control is actively built pressure unit 16 and opened
It is dynamic, it controls and is electrically turn off on the first isolating valve 8 and the second isolating valve 9, electric-opening on simulator control valve 10,13 He of the first inlet valve
Electric-opening on second inlet valve 14, the lower electric-opening of self-test valve 4, the limitation of check valve 15 are actively built highly pressurised liquid in pressure unit 16 and are flowed into
Fluid reservoir 5 actively builds pressure 16 high-pressure brake liquid of unit by the first inlet valve 13 and the second inlet valve 14 and flows into ESC module 21
In.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, active boost mode operation regimes are as follows；
The controller of vehicle transmits a signal to ECU2, and ECU2 control is actively built pressure unit 16 and started, and controls the first isolating valve 8
It is electrically turn off on the second isolating valve 9, electric-opening on simulator control valve 10, is established by cable on the first inlet valve 13 and the second inlet valve 14
It opens, the lower electric-opening of self-test valve 4, check valve 15, control brake fluid is unidirectionally flowed into from fluid reservoir 5 actively builds pressure unit 16.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, fluid infusion mode operation regimes are as follows；
ECU2 control is actively built pressure unit 16 and is started, and generates negative pressure actively building in pressure unit 16, ECU2 control first every
From being electrically turn off on valve 8 and the second isolating valve 9, electric-opening on simulator control valve 10, the first inlet valve 13 and the second inlet valve 14
Upper electric-opening, the lower electric-opening of self-test valve 4, actively builds pressure unit 16 and 21 runner of ESC module is connected, and the brake fluid of fluid reservoir 5 is logical
Check valve 15 is crossed to build in pressure unit 16 into active.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, Auto-Sensing Mode working method is as follows；
ECU2 control actively builds pressure unit 16 and establishes the first preset pressure and carry out pressure maintaining, controls and is electrically turn off on self-test valve 4,
It is electrically turn off under first inlet valve 13 and the second inlet valve 14；
ECU2 control actively builds pressure unit 16 and boosts, until the first inlet valve 13 and the second inlet valve 14 are under differential pressure action
It opens, 6 inside pressure maintaining situation of master cylinder and first is detected by the electric current of the first isolating valve 8 of control and the second isolating valve 9 respectively
9 sealing performance of isolating valve 8 and the second isolating valve.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, failure backup mode working method is as follows；
Actively build the lower electricity of pressure unit 16, the lower electric-opening of self-test valve 4, the first isolating valve 9 and the second isolating valve 10, simulator control
It is electrically turn off under valve 10 processed, is electrically turn off under the first inlet valve 13 and the second inlet valve 14, pedal assembly 1 is acted in the first chamber of master cylinder
6.1, high-pressure brake liquid is generated in the second chamber of master cylinder 6.2, and by the first isolating valve 8 and the second isolating valve 9 of unlatching, height is suppressed
Hydrodynamic is transmitted to ESC module 21.
Accounting of the Chinese electric passenger vehicle sales volume in the sales volume share in global electric passenger vehicle market is about 37%, and
Wherein electronic bus sales volume accounting is even more close to 99%.For electronic or mixed electrical automobile, energy recovery function is required function
Energy.Consulting is ground, it is expected that ADAS technology annual compound growth rate will be up to 35% according to intelligence, and the year two thousand twenty Chinese market can realize nearly 80,000,000,000 city
Field space.Electronic hydraulic brake system has very important market position as basic function execution unit in ADAS technology
With wide prospect.
The present invention uses decoupling type electronic hydraulic brake system, can enable the vehicle to realize by ECU control higher
Energy recovery efficiency, meet ADAS for braking system build pressure and response requires, while having structure simple at low cost excellent
Point.Detailed description of the invention
Present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is overall structure of the present invention.
Description of symbols
Pedal assembly 1
ECU 2
Pedal displacement sensor 3
Self-test valve 4
Fluid reservoir 5
Master cylinder 6
First hydraulic force snesor 7
First isolating valve 8
Second isolating valve 9
Simulator control valve 10
Pedal sense simulator 11
Second hydraulic force snesor 12
First inlet valve 13
Second inlet valve 14
Check valve 15
Actively build pressure unit 16
Motor 17
Drive transmission mechanism 18
Actively build pressure chamber 19
Plunger 20
ESC module 21.
Specific embodiment
As shown in Figure 1, hydraulic decoupling type electronic hydraulic brake system provided by the invention, comprising: pedal assembly 1, ECU2,
Pedal displacement sensor 3, self-test valve 4, fluid reservoir 5, master cylinder 6, the first hydraulic force snesor 7, the isolation of the first isolating valve 8, second
Valve 9, simulator control valve 10, pedal sense simulator 11, the second hydraulic force snesor 12, the sucking of the first inlet valve 13, second
Pressure unit 16 is built in valve 14, check valve 15 and active；
Pedal displacement sensor 3 acquires 1 stroke of pedal assembly, and master cylinder 6 has the second chamber of the first chamber of master cylinder 6.1 and master cylinder
6.2, airtight connection between the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2, in the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2 point
Not She You plunger, the first chamber of master cylinder 6.1 and the second chamber of master cylinder 6.2 outlet on be respectively equipped with the first isolating valve 8 and the second isolating valve
9, the first chamber of master cylinder 6.1 exports 11 simulator control valve of pedal sense simulator, 10 entrance in parallel, pedal assembly 1 and master cylinder first
Chamber 6.1 connects, and fluid reservoir 5 is separately connected the first chamber of master cylinder 6.1, the second chamber of master cylinder 6.2 and actively builds pressure unit 16, pedal sense
Simulator 11 and the first chamber 6.1, the second chamber of master cylinder 6.2 and active build any road in pressure 16 3 pipeline of unit and share the pipe of fluid reservoir 5
Road, fluid reservoir 5 and active are built between pressure unit 16 and are connected by parallel pipeline, wherein parallel pipeline is equipped with check valve all the way
15, the first hydraulic setting of force snesor 7 is actively building pressure unit in the second chamber of master cylinder 6.2, the second hydraulic setting of force snesor 12
16 outlets, the setting of self-test valve 4 is in the first chamber of master cylinder 6.1 on pipeline, the first inlet valve 13 and second is inhaled between the outlet of fluid reservoir 5
Enter valve 14 be arranged in parallel actively building pressure 16 export pipeline of unit, 13 place piping connection of the first inlet valve is in the first isolating valve 8
Between ESC module 21 on pipeline, 13 place piping connection of the first inlet valve is managed between the second isolating valve 9 and ESC module 21
On the road；What pressure unit 16 was actively built in the second hydraulic force snesor 12 monitoring builds pressure situation.
ECU2 acquires the first hydraulic force snesor 7, the second hydraulic force snesor 12 and 3 signal of pedal displacement sensor, with
Vehicle bus or sensor in other Internets or controller interact, to self-test valve 4, the first isolating valve 8, second every
From valve 9, simulator control valve 10, the first inlet valve 13, the second inlet valve 14 and actively build pressure unit 16 carry out control control patrol
Volume.
Pedal displacement sensor 3 uses dual channel sensor or single channel sensor.
6.1 plunger of the first chamber of master cylinder and 1 push rod axial direction elastic connection of pedal assembly, and push rod can be revolved around connection center
Turn.In the present embodiment, 6.1 plunger of the first chamber of master cylinder is connect with 1 push rod elastic hinge joint of pedal assembly.The first chamber of master cylinder 6.1 and master
The second chamber of cylinder 6.2 is hydraulic pressure transfer connection, and use is coaxially arranged, and the initiating power during power-assisted is by the first chamber of master cylinder 6.1 and master
The pretightning force of 6.2 inner spring of the second chamber of cylinder provides, and 6.2 plunger of the second chamber of master cylinder is in 6 inner cavity of master cylinder always.The master cylinder
6, in conventional brake, driver's brake pedal, the first isolating valve 8 and the second isolating valve 9 are closed, simulator control
Valve 10 is opened, and 6.1 brake fluid of the first chamber of master cylinder is entered in pedal sense simulator by simulator control valve 10, reaction masterpiece
The process felt with simulation traditional vacuum booster pedal on pedal push rod, is completed.The pent isolation of the second chamber of master cylinder 6.2
Valve limits rate of discharge, after through idle stroke, does not generate compression travel.
Self-test valve 4, the first isolating valve 8 and the second isolating valve 9 are normally opened 2/2-way solenoid valve, pedal sense simulator
11, the first inlet valve 13 and the second inlet valve 14 are normally closed 2/2-way solenoid valves.
Check valve 15 controls brake fluid and is only capable of flowing into actively to build from fluid reservoir 5 pressing unit 16.Check valve 15 uses big flow
Check valve, flow are designed according to each pipeline actual condition.
When self-test valve 4 is in power-up state, there is the one-way pressure maintaining ability from the first chamber of master cylinder 6.1 to fluid reservoir 5.It is being
When system is in Auto-Sensing Mode, ECU builds the movement of pressure unit 16 and several valves by control active to judge master cylinder and actively build to press list
Member builds whether pressure energy power is qualified and whether each solenoid valve works normally.
First isolating valve 8 and the second isolating valve 9 have two-way pressure maintaining, 9 arranged direction of the first isolating valve 8 and the second isolating valve
For, when the first chamber of master cylinder 6.1 and hydraulic hydraulic higher than in braking major loop the second chamber of master cylinder 6.2, the first isolating valve 8 and second
The spool of isolating valve 9 tends to open, and when one timing of electromagnetic force, above-mentioned pressure difference, which reaches isolating valve starting differential pressure, can rely on starting differential pressure
Open spool.Under normal assistant mode, when driver's brake pedal, isolating valve is closed, the first chamber of master cylinder and pedal sense
Feel simulator connection, the second chamber of master cylinder is not connected to brake circuit.Under failure mode, electricity is opened under isolating valve, and driver steps on
The hydraulic coupling that lower brake pedal generates inside master cylinder can be directly transmitted in braking major loop by isolating valve.
Simulator control valve 10 has two-way pressure maintaining ability, is higher than the first chamber of master cylinder when hydraulic in pedal sense simulator 11
When hydraulic in 6.1, the spool of simulator control valve 10 tends to open, when above-mentioned pressure difference reaches 10 starting differential pressure of simulator control valve
Spool can be opened by starting differential pressure.Under normal assistant mode, when driver's brake pedal, isolating valve is closed, master cylinder
First chamber is connected to pedal sense simulator, and the second chamber of master cylinder is not connected to brake circuit.It is electric under isolating valve under failure mode
It opens, the hydraulic coupling that driver's brake pedal generates inside master cylinder directly can be transmitted to braking by isolating valve and lead back
Lu Zhong.
Pedal sense simulator 11 can be using the simulator for having technology be received, and pedal sense simulator 11 includes by column
Plug, spring, rubber pad, seals and other component composition, the brake fluid from the first chamber of master cylinder push away inside pedal sense simulator
Dynamic plunger generates pressure to spring and rubber pad, by the pedal sense on hydraulic feedback to pedal assembly, generating simulation.It needs
It is noted that the cylinder diameter of adjusting pedal sense simulator, stroke, spring can be passed through for the pedal sense of different target
It is realized with the physical parameter of rubber pad to obtain the mode of target force-displacement curve.
The large-flow check valve, effect be the present invention relates to electronic hydraulic brake system in order to ESC system
Cooperating and design.
First inlet valve 13 and the second inlet valve 14 have two-way pressure maintaining ability, press hydraulic in unit 16 be higher than when actively building
When braking hydraulic in major loop, the spool of the first inlet valve 13 and the second inlet valve 14 tends to open, when above-mentioned pressure difference reaches suction
Spool can be opened by starting differential pressure by entering valve starting differential pressure.Liquid enters braking by inlet valve from pressure unit outflow is actively built
In major loop.For two inlet valves respectively with two isolating valve cooperatings, the opening and closing situation of both valves work is opposite.
Pressure chamber 16 is built in the active can illustratively use one kind by motor 17 using this field existing design, the present invention
Transmission mechanism 18 is driven, converts translation for rotary motion, the plunger 20 actively built in pressure chamber 19 is pushed to carry out building pressure.It drives and passes
Motivation structure 18, structure are ball-screw, are rotated by lead screw and nut is driven to advance.Motor 17, inner rotator and transmission mechanism
The lead screw of 18 ball-screws is connected.On axial dimension, the lead screw of transmission mechanism 18 enters inside motor 17, i.e. 17 rotor of motor
For hollow structure, it is therefore an objective to reduce axial dimension.
It is further improved the hydraulic decoupling type electronic hydraulic brake system, the hydraulic decoupling type electro-hydraulic brake
System has following operating mode；
A assistant mode；.
When pedal assembly 1 is operated, pedal displacement sensor 3 acquires the stroke of brake pedal, ECU2 by stroke and
Time calculating speed judges the braking intention of driver, and control is actively built pressure unit 16 and started, and controls the first isolating valve 8 and second
It is electrically turn off on isolating valve 9, electric-opening on simulator control valve 10, electric-opening on the first inlet valve 13 and the second inlet valve 14, from
The lower electric-opening of valve 4 is examined, the limitation of check valve 15 actively builds highly pressurised liquid in pressure unit 16 and flows into fluid reservoir 5, actively builds pressure unit 16
High-pressure brake liquid is flowed into ESC module 21 by the first inlet valve 13 and the second inlet valve 14, is then transmitted to four braked wheels
In cylinder, brake force is generated to wheel.
Since the system that this programme is related to is full decoupled system, therefore needing to design pedal sense simulator is driver
Brake pedal feel close to conventional truck booster is provided.Driver's brake pedal makes the first chamber of master cylinder and master cylinder second
Intracavitary brake fluid has certain pressure.Due to being electrically turn off on the second isolating valve, the intracavitary brake fluid of master cylinder second can not flow out master cylinder.
Due to being electrically turn off on the first isolating valve, electric-opening on simulator control valve, the intracavitary brake fluid of master cylinder first flows out master cylinder, by mould
Quasi- device control valve flows into pedal sense simulator, and realizes pedal sense by related physical structures in pedal sense simulator
Analog feedback.
In this operating mode, hydraulic force snesor is used for detecting the intracavitary hydraulic coupling of master cylinder second and feeding back in ECU
It is intended in auxiliary judgment operator brake, whether the pedal sense that oil circuit is realized with the presence or absence of leakage and system reaches driving
Member is expected.Hydraulic force snesor is used to detect the hydraulic coupling actively built in pressure unit, for mesh expected from auxiliary judgment driver
Whether mark severity of braking is met.
Since the system that this programme is related to is full decoupled system, the hydraulic coupling for actively building highly pressurised liquid in pressure unit can
It is freely adjusted with controlling motor by ECU, in other words, assist rate can be adjusted freely.When system judges the system of driver's input
Dynamic intention is stronger than standard condition, and ECU, which will control actively to build, presses the motor of unit to reach target hydraulic with faster revolving speed
Power reduces the distance of emergency brake of vehicle with this.
B active boost mode；
Under certain damped conditions, such as automatic emergency brake operating condition, the system that this programme is related to can be received based on ECU
Instruction execution automatic braking operation.
The controller of vehicle transmits a signal to ECU2, and ECU2 control is actively built pressure unit 16 and started, and controls the first isolating valve 8
It is electrically turn off on the second isolating valve 9, electric-opening on simulator control valve 10, is established by cable on the first inlet valve 13 and the second inlet valve 14
It opens, the lower electric-opening of self-test valve 4, check valve 15, control brake fluid is unidirectionally flowed into from fluid reservoir 5 actively builds pressure unit 16.
Pressure is established in actively building pressure unit, its control brake fluid of large-flow check valve is unidirectionally flowed into master from fluid reservoir
Dynamic to build pressure unit, large-flow check valve flows into fluid reservoir for preventing actively to build highly pressurised liquid in pressure unit.
Under this operating mode, due to being electrically turn off on the first and second isolating valves, the high pressure of pressure unit foundation is actively built not
Can enter master cylinder in, the flow direction of brake fluid be from actively build pressure unit by the first and second inlet valves flow into ESC module
In, it is then transmitted in four wheel cylinders, brake force is generated to wheel.
In this operating mode, hydraulic force snesor is used to detect the hydraulic coupling actively built in pressure unit, sentences for assisting
What disconnected ECU was issued builds whether pressure instruction is met.
C fluid infusion mode；
When ESC module 22 executes wheel cylinder hydraulic pressure power control logic, it may be necessary to which the system that this programme is related to is in the short time
The interior continuous multiple big flow fluid infusion of offer.ECU2 control active is built pressure unit 16 and is started, and bears actively building in pressure unit 16 to generate
Pressure, ECU2 is controlled to be electrically turn off on the first isolating valve 8 and the second isolating valve 9, electric-opening on simulator control valve 10, the first inlet valve
13 and second electric-opening on inlet valve 14, the lower electric-opening of self-test valve 4, actively builds pressure unit 16 and 21 runner of ESC module is connected, storage
The brake fluid of flow container 5 is built in pressure unit 16 by check valve 15 into active.
Under this operating mode, ECU is controlled to be electrically turn off on the first isolating valve and the second isolating valve, and simulator control valve powers on
It opens, electric-opening on the first inlet valve and the second inlet valve, electric-opening under self-test valve.First inlet valve and the second inlet valve power on
It opens to be used to guarantee actively to build pressure unit to connect on the first isolating valve and the second isolating valve with ESC module runner and be electrically turn off, simulation
Electric-opening is used to guarantee the pedal sense that the hydraulic fluctuation of wheel cylinder does not interfere with driver's experience on device control valve.
D Auto-Sensing Mode；
Since whether the system that this programme is related to needs regular self-checking function normal, therefore it is fixed for system to design Auto-Sensing Mode
Phase self-test.ECU2 control actively builds pressure unit 16 and establishes the first preset pressure and carry out pressure maintaining, controls and is electrically turn off on self-test valve 4,
It is electrically turn off under first inlet valve 13 and the second inlet valve 14；
ECU2 control actively builds pressure unit 16 and boosts, until the first inlet valve 13 and the second inlet valve 14 are under differential pressure action
It opens, 6 inside pressure maintaining situation of master cylinder and first is detected by the electric current of the first isolating valve 8 of control and the second isolating valve 9 respectively
9 sealing performance of isolating valve 8 and the second isolating valve.
ECU control actively builds pressure unit and establishes bigger pressure, until the first inlet valve being electrically turn off under script and second are inhaled
Enter valve to open under differential pressure action.At this time by the electric current of control the first isolating valve and the second isolating valve, master can be detected respectively
Cylinder interior pressure maintaining situation and solenoid valve leakage.The first chamber of master cylinder, the second chamber of master cylinder, isolating valve, isolating valve leakproofness are confirmed with this
It can be normal.
E failure backup mode；
Actively build the lower electricity of pressure unit 16, the lower electric-opening of self-test valve 4, the first isolating valve 9 and the second isolating valve 10, simulator control
It is electrically turn off under valve 10 processed, is electrically turn off under the first inlet valve 13 and the second inlet valve 14, pedal assembly 1 is acted in the first chamber of master cylinder
6.1, high-pressure brake liquid is generated in the second chamber of master cylinder 6.2, and by the first isolating valve 8 and the second isolating valve 9 of unlatching, height is suppressed
Hydrodynamic is transmitted to ESC module 21.
The system that this programme is related to actively builds pressure unit motor and whole solenoid valves all in lower electric shape under failure mode
State, driver step on pedal assembly, and high-pressure brake liquid is generated in the second chamber of the first chamber of master cylinder and master cylinder, passes through the first of unlatching
Isolating valve and the second isolating valve, high-pressure brake liquid is transmitted in ESC module, is then transmitted in four wheel cylinders, to vehicle
Wheel generates brake force.
Above by specific embodiment and embodiment, invention is explained in detail, but these are not composition pair
Limitation of the invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Into these also should be regarded as protection scope of the present invention.
Claims (18)
1. a kind of hydraulic decoupling type electronic hydraulic brake system characterized by comprising pedal assembly (1), ECU(2), pedal
Displacement sensor (3), self-test valve (4), fluid reservoir (5), master cylinder (6), the first hydraulic force snesor (7), the first isolating valve (8),
Second isolating valve (9), simulator control valve (10), pedal sense simulator (11), the second hydraulic force snesor (12), first inhale
Enter valve (13), the second inlet valve (14), check valve (15) and actively builds pressure unit (16)；
Pedal displacement sensor (3) acquires pedal assembly (1) stroke, and master cylinder (6) has the first chamber of master cylinder (6.1) and master cylinder second
Chamber (6.2), airtight connection between the first chamber of master cylinder (6.1) and the second chamber of master cylinder (6.2), the first chamber of master cylinder (6.1) and master cylinder
Is respectively equipped with plunger in two chambers (6.2), the first chamber of master cylinder (6.1) and the second chamber of master cylinder (6.2) export be respectively equipped with first every
From valve (8) and the second isolating valve (9), the first chamber of master cylinder (6.1) exports the simulator control of pedal sense simulator (11) in parallel
Valve (10) entrance, pedal assembly (1) are connect with the first chamber of master cylinder (6.1), fluid reservoir (5) be separately connected the first chamber of master cylinder (6.1),
Pressure unit (16), pedal sense simulator (11) and the first chamber (6.1), the second chamber of master cylinder are built in the second chamber of master cylinder (6.2) and active
(6.2) and actively it builds any road in pressure (16) three pipeline of unit and shares fluid reservoir (5) pipeline, it is single that pressure is built in fluid reservoir (5) and active
It is connected between first (16) by parallel pipeline, wherein parallel pipeline is equipped with check valve (15) all the way, the first hydraulic force snesor
(7) setting is actively building pressure unit (16) outlet, self-test in the second chamber of master cylinder (6.2), the second hydraulic force snesor (12) setting
Valve (4) setting is in the first chamber of master cylinder (6.1) on pipeline, the first inlet valve (13) and second is sucked between fluid reservoir (5) outlet
Valve (14), which is arranged in parallel, is actively building pressure unit (16) export pipeline, and piping connection where the first inlet valve (13) is in the first isolation
Between valve (8) and ESC module (21) on pipeline, piping connection is in the second isolating valve (9) and ESC mould where the first inlet valve (13)
Between block (21) on pipeline；
ECU(2 the first hydraulic force snesor (7), the second hydraulic force snesor (12) and pedal displacement sensor (3) letter) are acquired
Number, in vehicle bus or other Internets sensor or controller interact, to self-test valve (4), the first isolating valve
(8), it is single to build pressure for the second isolating valve (9), simulator control valve (10), the first inlet valve (13), the second inlet valve (14) and active
First (16) carry out control control logic.
2. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: pedal displacement sensor
(3) dual channel sensor or single channel sensor are used.
3. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: the first chamber of master cylinder (6.1)
Plunger and pedal assembly (1) push rod axial direction elastic connection, and push rod can be rotated around connection center.
4. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 3, it is characterised in that: the first chamber of master cylinder (6.1)
Plunger is connect with pedal assembly (1) push rod elastic hinge joint.
5. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: the second chamber of master cylinder (6.2)
Plunger is in master cylinder (6) inner cavity always.
6. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: self-test valve (4), first every
It is normally opened 2/2-way solenoid valve, pedal sense simulator (11), the first inlet valve (13) from valve (8) and the second isolating valve (9)
It is normally closed 2/2-way solenoid valve with the second inlet valve (14).
7. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: check valve (15) control system
Hydrodynamic, which is only capable of flowing into from fluid reservoir (5), actively builds pressure unit (16).
8. hydraulic decoupling type electronic hydraulic brake system as described in claim 1, it is characterised in that: the first chamber of master cylinder (6.1)
It is that hydraulic pressure transfer connects with the second chamber of master cylinder (6.2), use is coaxially arranged, and the initiating power during power-assisted is by the first chamber of master cylinder
(6.1) it is provided with the pretightning force of the second chamber of master cylinder (6.2) inner spring.
9. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 6, it is characterised in that:
When self-test valve (4) is in power-up state, have from the first chamber of master cylinder (6.1) to the one-way pressure maintaining ability of fluid reservoir (5).
10. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 6, it is characterised in that: the first isolating valve (8) and
Second isolating valve (9) has two-way pressure holding function, and the first isolating valve (8) and the second isolating valve (9) arranged direction be, when master cylinder the
When one chamber (6.1) and hydraulic hydraulic higher than in braking major loop the second chamber of master cylinder (6.2), the first isolating valve (8) and the second isolation
The spool of valve (9) tends to open, and when one timing of electromagnetic force, above-mentioned pressure difference, which reaches isolating valve starting differential pressure, can only rely on starting differential pressure
Open spool.
11. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 6, it is characterised in that: simulator control valve
(10) there is two-way pressure maintaining ability, when hydraulic hydraulic higher than in the first chamber of master cylinder (6.1) in pedal sense simulator (11), mould
The spool of quasi- device control valve (10) tends to open, and can rely on unlatching when above-mentioned pressure difference reaches simulator control valve (10) starting differential pressure
Pressure difference opens spool.
12. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 6, it is characterised in that: the first inlet valve (13)
There is two-way pressure maintaining ability with the second inlet valve (14), it is hydraulic hydraulic higher than in braking major loop in pressure unit (16) when actively building
When, the spool of the first inlet valve (13) and the second inlet valve (14) tends to open, and opens pressure when above-mentioned pressure difference reaches inlet valve
Difference can open spool by starting differential pressure.
13. the hydraulic decoupling type electronic hydraulic brake system as described in claim 1-12 any one, it is characterised in that: it is described
Hydraulic decoupling type electronic hydraulic brake system has following operating mode；
A) assistant mode；
B) active boost mode；
C) fluid infusion mode；
D) Auto-Sensing Mode；
E) fail backup mode.
14. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 13, it is characterised in that: assistant mode work side
Formula is as follows；
ECU(2 the braking intention of driver) is judged by stroke and time calculating speed, control is actively built pressure unit (16) and opened
It is dynamic, it controls and is electrically turn off on the first isolating valve (8) and the second isolating valve (9), electric-opening on simulator control valve (10), the first sucking
Pressure unit is actively built in electric-opening on valve (13) and the second inlet valve (14), electric-opening under self-test valve (4), check valve (15) limitation
(16) interior highly pressurised liquid flows into fluid reservoir (5), actively builds pressure unit (16) high-pressure brake liquid and passes through the first inlet valve (13) and the
Two inlet valves (14) flow into ESC module (21).
15. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 13, it is characterised in that: active boost mode work
It is as follows to make mode；
The controller of vehicle transmits a signal to ECU(2), ECU(2) it controls and actively builds pressure unit (16) starting, control first is isolated
It is electrically turn off on valve (8) and the second isolating valve (9), electric-opening on simulator control valve (10), the first inlet valve (13) and second is inhaled
Enter electric-opening on valve (14), electric-opening under self-test valve (4), check valve (15) controls brake fluid and unidirectionally flows into from fluid reservoir (5)
Unit (16) are pressed to actively building.
16. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 13, it is characterised in that: fluid infusion mode work side
Formula is as follows；
ECU(2) pressure unit (16) starting is actively built in control, and negative pressure, ECU(2 are generated in pressure unit (16) actively building) control the
It is electrically turn off on one isolating valve (8) and the second isolating valve (9), electric-opening on the first inlet valve (13) and the second inlet valve (14), from
Electric-opening under valve (4) is examined, pressure unit (16) is actively built and ESC module (21) runner is connected, the brake fluid of fluid reservoir (5) passes through list
It is interior to valve (15) into pressure unit (16) is actively built.
17. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 13, it is characterised in that: Auto-Sensing Mode work side
Formula is as follows；
ECU(2) control actively builds pressure unit (16) and establishes the first preset pressure and carry out pressure maintaining, and control self-test valve (4) powers on pass
It closes, is electrically turn off under the first inlet valve (13) and the second inlet valve (14)；
ECU(2) pressure unit (16) boosting is actively built in control, until the first inlet valve (13) and the second inlet valve (14) are in pressure difference work
With lower unlatching, the internal pressure maintaining feelings of master cylinder (6) are detected by the electric current of control the first isolating valve (8) and the second isolating valve (9) respectively
Condition and the first isolating valve (8) and the second isolating valve (9) sealing performance.
18. hydraulic decoupling type electronic hydraulic brake system as claimed in claim 13, it is characterised in that: failure backup mode work
It is as follows to make mode；
Actively build electricity under pressure unit (16), electric-opening under self-test valve (4), the first isolating valve (9) and the second isolating valve (10), simulation
Device control valve is electrically turn off under (10), is electrically turn off under the first inlet valve (13) and the second inlet valve (14), and pedal assembly (1) movement exists
The first chamber of master cylinder (6.1), the second chamber of master cylinder (6.2) is middle to generate high-pressure brake liquid, passes through the first isolating valve (8) of unlatching and second
High-pressure brake liquid is transmitted to ESC module (21) by isolating valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811620833.2A CN109760656A (en) | 2018-12-28 | 2018-12-28 | Hydraulic decoupling type electronic hydraulic brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620833.2A CN109760656A (en) | 2018-12-28 | 2018-12-28 | Hydraulic decoupling type electronic hydraulic brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109760656A true CN109760656A (en) | 2019-05-17 |
Family
ID=66450467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811620833.2A Pending CN109760656A (en) | 2018-12-28 | 2018-12-28 | Hydraulic decoupling type electronic hydraulic brake system |
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| CN (1) | CN109760656A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110316170A (en) * | 2019-07-19 | 2019-10-11 | 赵海荣 | A kind of automobile brake aid-device of decoupling |
| CN110316168A (en) * | 2019-06-28 | 2019-10-11 | 武汉元丰汽车电控***有限公司 | A kind of pedal travel simulator apparatus |
| CN110341674A (en) * | 2019-07-23 | 2019-10-18 | 芜湖伯特利汽车安全***股份有限公司 | A kind of hydraulic control unit giving young employees remedial-courses in general knowledge and vocational skills liquid check valve tandem redundancy structure and improve structure |
| CN111071227A (en) * | 2019-12-26 | 2020-04-28 | 苏州科美澄汽车科技有限公司 | Decoupling electromechanical and hydraulic integrated brake power-assisted system |
| CN111252058A (en) * | 2020-03-02 | 2020-06-09 | 山东汽车制造有限公司 | Service braking emergency rescue device of hydraulic braking vehicle model |
| CN111483445A (en) * | 2020-03-25 | 2020-08-04 | 宁波吉利汽车研究开发有限公司 | Dynamic driving domain control system and communication network structure |
| CN111674373A (en) * | 2020-06-22 | 2020-09-18 | 北京经纬恒润科技有限公司 | Brake pedal feel simulator and brake pedal feel adjusting method |
| CN112977383A (en) * | 2021-04-15 | 2021-06-18 | 一汽解放汽车有限公司 | Double-booster decoupling type hydraulic braking system |
| CN113306539A (en) * | 2021-06-30 | 2021-08-27 | 吉林东光奥威汽车制动***有限公司 | Electronic brake boosting system and method |
| CN113335259A (en) * | 2021-07-22 | 2021-09-03 | 中国第一汽车股份有限公司 | Brake system power-on detection method, device, equipment and storage medium |
| CN113428121A (en) * | 2021-07-01 | 2021-09-24 | 吉林东光奥威汽车制动***有限公司 | Hydraulic full-decoupling electric control brake power-assisted system and method |
| CN113460011A (en) * | 2021-08-08 | 2021-10-01 | 吉林东光奥威汽车制动***有限公司 | Pressurizing block capable of being generally used for braking assistance |
| WO2021237496A1 (en) * | 2020-05-27 | 2021-12-02 | 华为技术有限公司 | Hydraulic regulating unit, and braking system and control method therefor |
| CN113771815A (en) * | 2021-09-06 | 2021-12-10 | 北京英创汇智科技有限公司 | Vehicle integrated electro-hydraulic braking system device |
| CN114802149A (en) * | 2021-01-19 | 2022-07-29 | 上海汽车集团股份有限公司 | Integrated brake control system suitable for L3-L5 intelligent driving |
| CN115158266A (en) * | 2022-09-07 | 2022-10-11 | 万向钱潮股份公司 | Brake system |
| CN115352421A (en) * | 2022-09-07 | 2022-11-18 | 东风柳州汽车有限公司 | Negative pressure control brake circuit |
| CN115402281A (en) * | 2022-09-09 | 2022-11-29 | 东风柳州汽车有限公司 | Electronic hydraulic braking system and method |
| CN116022111A (en) * | 2022-12-21 | 2023-04-28 | 上海千顾汽车科技有限公司 | Integrated braking system with improved electromagnetic valve design |
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| CN110316168A (en) * | 2019-06-28 | 2019-10-11 | 武汉元丰汽车电控***有限公司 | A kind of pedal travel simulator apparatus |
| CN110316170A (en) * | 2019-07-19 | 2019-10-11 | 赵海荣 | A kind of automobile brake aid-device of decoupling |
| CN110341674A (en) * | 2019-07-23 | 2019-10-18 | 芜湖伯特利汽车安全***股份有限公司 | A kind of hydraulic control unit giving young employees remedial-courses in general knowledge and vocational skills liquid check valve tandem redundancy structure and improve structure |
| CN111071227A (en) * | 2019-12-26 | 2020-04-28 | 苏州科美澄汽车科技有限公司 | Decoupling electromechanical and hydraulic integrated brake power-assisted system |
| CN111252058A (en) * | 2020-03-02 | 2020-06-09 | 山东汽车制造有限公司 | Service braking emergency rescue device of hydraulic braking vehicle model |
| CN111483445A (en) * | 2020-03-25 | 2020-08-04 | 宁波吉利汽车研究开发有限公司 | Dynamic driving domain control system and communication network structure |
| WO2021237496A1 (en) * | 2020-05-27 | 2021-12-02 | 华为技术有限公司 | Hydraulic regulating unit, and braking system and control method therefor |
| CN111674373A (en) * | 2020-06-22 | 2020-09-18 | 北京经纬恒润科技有限公司 | Brake pedal feel simulator and brake pedal feel adjusting method |
| CN114802149B (en) * | 2021-01-19 | 2023-03-21 | 上海汽车集团股份有限公司 | Integrated brake control system suitable for L3-L5 intelligent driving |
| CN114802149A (en) * | 2021-01-19 | 2022-07-29 | 上海汽车集团股份有限公司 | Integrated brake control system suitable for L3-L5 intelligent driving |
| CN112977383A (en) * | 2021-04-15 | 2021-06-18 | 一汽解放汽车有限公司 | Double-booster decoupling type hydraulic braking system |
| CN113306539A (en) * | 2021-06-30 | 2021-08-27 | 吉林东光奥威汽车制动***有限公司 | Electronic brake boosting system and method |
| CN113428121A (en) * | 2021-07-01 | 2021-09-24 | 吉林东光奥威汽车制动***有限公司 | Hydraulic full-decoupling electric control brake power-assisted system and method |
| CN113335259A (en) * | 2021-07-22 | 2021-09-03 | 中国第一汽车股份有限公司 | Brake system power-on detection method, device, equipment and storage medium |
| CN113335259B (en) * | 2021-07-22 | 2022-06-21 | 中国第一汽车股份有限公司 | Brake system power-on detection method, device, equipment and storage medium |
| CN113460011A (en) * | 2021-08-08 | 2021-10-01 | 吉林东光奥威汽车制动***有限公司 | Pressurizing block capable of being generally used for braking assistance |
| CN113771815A (en) * | 2021-09-06 | 2021-12-10 | 北京英创汇智科技有限公司 | Vehicle integrated electro-hydraulic braking system device |
| CN115158266A (en) * | 2022-09-07 | 2022-10-11 | 万向钱潮股份公司 | Brake system |
| CN115352421A (en) * | 2022-09-07 | 2022-11-18 | 东风柳州汽车有限公司 | Negative pressure control brake circuit |
| CN115352421B (en) * | 2022-09-07 | 2023-05-23 | 东风柳州汽车有限公司 | Negative pressure control braking circuit |
| CN115158266B (en) * | 2022-09-07 | 2024-02-13 | 万向钱潮股份公司 | Braking System |
| CN115402281A (en) * | 2022-09-09 | 2022-11-29 | 东风柳州汽车有限公司 | Electronic hydraulic braking system and method |
| CN115402281B (en) * | 2022-09-09 | 2023-06-16 | 东风柳州汽车有限公司 | Electronic hydraulic braking system and method |
| CN116022111A (en) * | 2022-12-21 | 2023-04-28 | 上海千顾汽车科技有限公司 | Integrated braking system with improved electromagnetic valve design |
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